linux-kernel - Re: [PATCH 7/7] s390/vfio_ap: always clean up IRQ resources

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Message-ID: <20221219151007.639dff5f.pasic@linux.ibm.com>
Date:   Mon, 19 Dec 2022 15:10:07 +0100
From:   Halil Pasic <pasic@...ux.ibm.com>
To:     Tony Krowiak <akrowiak@...ux.ibm.com>
Cc:     linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, jjherne@...ux.ibm.com, freude@...ux.ibm.com,
        borntraeger@...ibm.com, cohuck@...hat.com, mjrosato@...ux.ibm.com,
        alex.williamson@...hat.com, kwankhede@...dia.com,
        fiuczy@...ux.ibm.com, Halil Pasic <pasic@...ux.ibm.com>
Subject: Re: [PATCH 7/7] s390/vfio_ap: always clean up IRQ resources

On Tue, 13 Dec 2022 10:44:37 -0500
Tony Krowiak <akrowiak@...ux.ibm.com> wrote:

> Clean up IRQ resources even when a PQAP(ZAPQ) function fails with an error
> not handled by a case statement.

Why?

I'm afraid this is a step in the wrong direction...

> 
> Signed-off-by: Tony Krowiak <akrowiak@...ux.ibm.com>
> ---
>  drivers/s390/crypto/vfio_ap_ops.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c
> index e80c5a6b91be..2dd8db9ddb39 100644
> --- a/drivers/s390/crypto/vfio_ap_ops.c
> +++ b/drivers/s390/crypto/vfio_ap_ops.c
> @@ -1676,7 +1676,7 @@ static int vfio_ap_mdev_reset_queue(struct vfio_ap_queue *q)
>  		     "PQAP/ZAPQ for %02x.%04x failed with invalid rc=%u\n",
>  		     AP_QID_CARD(q->apqn), AP_QID_QUEUE(q->apqn),
>  		     status.response_code);
> -		return -EIO;
> +		break;
>  	}
>  
>  	vfio_ap_free_aqic_resources(q);